Jacob schaeffee



(No Model.)

J. SUHAEPFER.

, SAW FILE GUIDE. No. 356,082. 8 Patented Jan ll, 1887.

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Nrrs TA'IES JACOB SOHAEFFER, OF DAYTON, OHIO, ASSIGNOR OF ONE-HALF TOARTHUR GIESLER, OF SAME PLACE.

SAW-FILE GUIDE.

SPECIFICATION forming part of Letters Patent No. 356,082, dated January11, 1837. Application filed July 3,1886. Serial No. 207,153. (No model.)

7 To all whom it may concern:

Be it known that I, JACOB SCHAEFFER, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented a certain new and useful Improvement in Saw-File Guides; and Ido hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in the.art to which it appertains to make and use the same, reference beinghadto the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

My invention relates to improvements in saw-file guides; and it consistsof a metallic frame supported in a grooved wooden clamp, said framehaving an adjustable guide pivoted to it, and which serves to givedirection to the file and arrest the cut thereof, so that the teeth ofthe saw shall be even on their cutting-points. The mechanism isillustrated in the accompanying drawings, in which Figure lzis aperspective of the saw-file guide as attached in operation. Fig. 2 is afragmentary section of the frame, showing the engaging-lever and point.Fig. 3 is a front view of the adj Listing-plate. Fig. 4. is a side viewof the eye-screw. Fig. 5 is a top view of the adjustingplate and thepivotal guide held thereon.

Like letters refer to like parts throughout the several views.

A is a cast-iron frame. The sides are symmetrical, and at the inner endsare lugs which enter the grooves-of the-wooden clamp J. The plate B ispivoted on screws in the ends of the frame, thereby admitting ofhorizontal adjustment. The screw L enters an orifice in the frame,passes through a segmental slot in the plate, and is fastened by a nut.The use of this screw is to bind the adjustingplate at any desirablepoint. On the adj usting-plate is pivoted the guide 0, the thumbscrew mforming the pivot. A series of concentric holes are drilled in the adjusting-plate, and a dowel-pin of the guide-plate enters one of theseries, as the same is adjusted to give the proper angle to the file. Aseries of indices may be used, as shown by marks on the adjusting-plate,the pivotal guides having a point suitable for the purpose.

The guide-bar O is embraced by the slot or channel of thepivotalguide-plate, and within which it freely moves. This bar has a series ofholes, 0, and the arm E is attached to said bar by a screw of thesame,which enters said holes. In the forward end of this arm is a notch, andwithin which is held the eye-screw F. WVithin an orifice of this screwis placed the end of the file, and it-is made fast by the turning of thenut.

The handle of file H is held by a screw in an eye of the slotted arm N.The slot embraces the guide-bar, and permits the same to move verticallyuntil said bar reaches the bottom of the slot, when the filing ceases.

To the frame is pivoted the setting-lever G, in the end of which isloosely fitted the point 8, which enters the space betwen the points ofthe saw-teeth. Within the frame, and-bearing on the end of the lever, isa spiral spring, t, which serves to hold the point firmly within the sawand bind the lugs of the frame against the upper surfaces of theclamp-grooves, thus holding the frame firmly in position during theprocess of filing. I

I is part of a saw-blade, which should be carefully adjusted within theclamp and made fast by screws at the ends. If the adj ustment is proper,when the tooth is properlysharpened, the guide-bar has reached thebottom of the slot in the arm N, and thus adjusted the points of theteeth. When the filing is completed, the points of the teeth are inline.

The saw-guide is carried from tooth to tooth by raising the lever andmoving the frame.

The use of the holes in the end of the guide bar is to adapt the same todifferent lengths of files.

.IVhat I claim, "and desire to secure by Letters Patent, is p l. Theframe A, with lugs to engage a grooved clamp, adjustable plate B, with.binding-screw L, guide-plate 0, bar D, holder-arm E, with eyebolt F,slotted arm N, and settinglevei' G, with point 8, and spiral spring, in

In testimony that I claim the foregoing as w my own I affix my signaturein presence of JACOB SGHAEFFER.

2. In a saw-file guide, the setting lever G,

5 With point 8 to engage the saw, and spiral spring t, in combinationwith a, frame, substantially as set forth.

Witnesses:

B. PICKERING, SUMNER T. SMITH.

combination substa'ntiallly as set forth. two witnesses.

